pdf document GPS Based Autonomous Navigation Study for the Lunar Gateway

Luke B. Winternitz, William A. Bamford, Anne C. Long, Munther Hassouneh

This paper describes and predicts the performance of a conceptual autonomous GPS-based navigation system for NASA’s planned Lunar Gateway. The system is based on the flight-proven Magnetospheric Multiscale (MMS) GPS navigation system augmented with an Earth-pointed high-gain antenna and, optionally, an atomic clock.
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pdf document TESS Flight Dynamics Commissioning Results and Experiences

Joel J. K. Parker, Ryan L. Lebois, Stephen Lutz, Craig Nickel, Kevin Ferrant, Adam Michaels

Abstract: The Transiting Exoplanet Survey Satellite (TESS) will perform the first-ever spaceborne all-sky exoplanet transit survey and is the first primary-mission application of a lunar-resonant orbit.
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pdf document The Decade of Light: Innovations in Space Communications

Dave Israel, Phil Liebrecht, Don Cornwell, Greg Heckler

NASA’s Space Communications and Navigation (SCaN) program office’s vision of a fully interoperable network of space communications assets is known as the Decade of Light. Through relentless advancement of current technologies, NASA is progressing toward a future of seamless mission enabling space communications and navigation.
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Optical communications for human spaceflight paper 2018 Optical Communications Systems for NASA's Human Space Flight Missions

Antonios A. Seas, Bryan Robinson, Tina Shih, Farzana Khatri, Mark Brumfield

The Laser-Enhanced Mission Communications Navigation and Operational Services (LEMNOS) office at Goddard Space Flight Center (GSFC) manages two NASA optical communication related projects, the Orion EM-2 Optical Communications Terminal (O2O) and the Integrated Laser Communications Relay Demonstration (LCRD) Low-Earth Orbit (LEO) User Modem and Amplifier Terminal (ILLUMA-T) projects.
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GNSS Paper The Multi-GNSS Space Service Volume

Joel J. Parker, Frank H. Bauer, Benjamin W. Ashman, James J. Miller, Werner Enderle, Daniel Blonski

Global Navigation Satellite Systems (GNSS), now routinely used for navigation by spacecraft in low Earth orbit, are being used increasingly by high-altitude users in geostationary orbit and high eccentric orbits as well, near to and above the GNSS constellations themselves.
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SSV Paper 2018 Space User Visibility Benefits of the Multi-GNSS Space Service Volume: An Internationally-Coordinated, Global and Mission-Specific Analysis

Werner Enderle, Francesco Gini, Henno Boomkamp, Joel J. Parker, Benjamin W. Ashman, Bryan W. Welch, Mick V. Koch, Obed S. Sands

The number and scope of Global Navigation Satellite System (GNSS)-based space applications has grown significantly since the first GNSS space receiver was flown in the early 1980's. The vast majority of GNSS space users operate in Low-Earth Orbit (LEO), where the use of GNSS receivers has become routine.
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Book chapter on Space Mobile Network Space Mobile Network Concepts for Missions Beyond Low Earth Orbit

David J. Israel, Christopher J. Roberts, Robert M. Morgenstern, Jay L. Gao, Wallace S. Tai

The Space Mobile Network (SMN) is an architectural framework that will allow for quicker, more efficient and more easily available space communications services, providing user spacecraft with an experience similar to that of terrestrial mobile network users.
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Paper 2018 Securing and Auto-Synchronizing Communication over Free-Space Optics Using Quantum Key Distribution and Chaotic Systems

Naveed Mahmud, Esam El-Araby, Harry Shaw, La Vida Cooper

Free-Space Optical (FSO) communication provides very large bandwidth, relatively low cost, low power, low mass of implementation, and improved security when compared to conventional Free-Space Radio-Frequency (FSRF) systems.
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Smallsat Communications Paper 2018 Investigation into New Ground Based Communications Service Offerings in Response to SmallSat Trends

Scott H. Schaire, Serhat Altunc, Yen Fun Wong, Obadiah O. Kegege, George D. Bussey, Marcus Murbach, Howard Garon, Yudhajeet Dasgupta, Steve Gaines, Edward McCarty

The number of NASA sponsored Small Satellite (SmallSat) missions is expected to continue to grow rapidly in the next decade and beyond. There is a growing trend towards more ambitious SmallSat missions, including formation flying (Constellation, Cluster, Trailing) SmallSats and SmallSats destined for lunar orbit and beyond.
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pdf document GPS Operations in High Earth Orbit: Recent Experiences and Future Opportunities

Benjamin W. Ashman, Frank H. Bauer, Joel J.K. Parker, Jennifer E. Donaldson

Over the past two decades, spacecraft in Low Earth Orbit (LEO) have significantly benefited from real-time reception of navigation and timing signals from the Global Positioning System (GPS).
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